<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - segfault in zwp_pointer_constraints_v1_lock_pointer" href="https://bugs.freedesktop.org/show_bug.cgi?id=102474#c3">Comment # 3</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - segfault in zwp_pointer_constraints_v1_lock_pointer" href="https://bugs.freedesktop.org/show_bug.cgi?id=102474">bug 102474</a> from <a class="email" href="mailto:fourdan@xfce.org" title="Olivier Fourdan <fourdan@xfce.org>"> Olivier Fourdan</a> <pre>I can reproduce a similar crash using qemu-kvm with SDL backend and alt-tabbing between the qemu window and some ohter native window in gnome-shell: Thread 1 "Xwayland" received signal SIGSEGV, Segmentation fault. 0x000000000042b77e in zwp_pointer_constraints_v1_lock_pointer (lifetime=2, region=0x0, pointer=<optimized out>, surface=<optimized out>, zwp_pointer_constraints_v1=0x1ef37d0) at pointer-constraints-unstable-v1-client-protocol.h:347 347 id = wl_proxy_marshal_constructor((struct wl_proxy *) zwp_pointer_constraints_v1, (gdb) bt #0 0x000000000042b77e in zwp_pointer_constraints_v1_lock_pointer (lifetime=2, region=0x0, pointer=<optimized out>, surface=<optimized out>, zwp_pointer_constraints_v1=0x1ef37d0) at pointer-constraints-unstable-v1-client-protocol.h:347 #1 xwl_pointer_warp_emulator_lock (warp_emulator=0x2c26db0) at xwayland-input.c:2584 #2 0x000000000042d998 in xwl_seat_maybe_lock_on_hidden_cursor (xwl_seat=xwl_seat@entry=0x29142f0) at xwayland-input.c:2756 #3 0x000000000042ef15 in xwl_seat_maybe_lock_on_hidden_cursor (xwl_seat=0x29142f0) at xwayland-input.c:2765 #4 xwl_seat_cursor_visibility_changed (xwl_seat=xwl_seat@entry=0x29142f0) at xwayland-input.c:2768 #5 0x000000000042fa68 in xwl_set_cursor (device=<optimized out>, screen=<optimized out>, cursor=<optimized out>, x=<optimized out>, y=<optimized out>) at xwayland-cursor.c:245 #6 0x00000000004c4b8a in miPointerUpdateSprite (pDev=0x28e6fa0) at mipointer.c:468 #7 0x00000000004c4dda in miPointerDisplayCursor (pDev=0x28e6fa0, pScreen=0x1ee6740, pCursor=0x2b988a0) at mipointer.c:206 #8 0x00000000004b2250 in CursorDisplayCursor (pDev=0x28e6fa0, pScreen=0x1ee6740, pCursor=0x2b988a0) at cursor.c:150 #9 0x000000000052e44f in AnimCurDisplayCursor (pDev=0x28e6fa0, pScreen=0x1ee6740, pCursor=0x2b988a0) at animcur.c:220 #10 0x000000000044cc4b in ChangeToCursor (pDev=0x28e6fa0, cursor=0x2b988a0) at events.c:936 #11 0x0000000000453d3e in ActivatePointerGrab (mouse=0x28e6fa0, grab=0x2d1d7f0, time=..., autoGrab=<optimized out>) at events.c:1542 #12 0x000000000044ecd1 in GrabDevice (client=client@entry=0x2ae5720, dev=dev@entry=0x28e6fa0, pointer_mode=1, keyboard_mode=1, grabWindow=<optimized out>, ownerEvents=<optimized out>, ctime=0, mask=0x7ffce3a623f0, grabtype=1, curs=0, confineToWin=4194314, status=0x7ffce3a623ef "") at events.c:5120 #13 0x000000000045180a in ProcGrabPointer (client=0x2ae5720) at events.c:4908 #14 0x0000000000443ffa in Dispatch () at dispatch.c:478 #15 0x0000000000447f08 in dix_main (argc=10, argv=0x7ffce3a625e8, envp=<optimized out>) at main.c:276 #16 0x00007efc0168250a in __libc_start_main () from /lib64/libc.so.6 #17 0x000000000042979a in _start ()</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>